The crystal structure of a new mixed valence arsenic(III,V)oxoacid H6As3+
7As5+
7O31
Author:
Orosel Denis,Dinnebier Robert E.,Balog Paul,Jansen Martin
Abstract
We report on a new mixed valence arsenic(III,V)oxoacid H6As3+
7As5+
7O31 which crystallizes in the hexagonal space group P63 (no. 173), with lattice parameters a = 12.0525(1) Å, c = 4.7344(1) Å, V = 595.6(1) Å3 and Z = 2. This phase is metastable and upon heating the RT-phase of As2O5 is recovered. The structure exhibits the first As5+ atom with a fivefold coordination by oxygen atoms in the shape of a distorted square pyramid. The positions of the hydrogen atoms were determined during the structure refinement from high resolution synchrotron powder diffraction data by difference Fourier analysis.
Publisher
Walter de Gruyter GmbH
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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